OTOY Forums

Hi,
As already pointed out some time ago, there is a bug with displacement maps. In OR Standalone, it seems to work fine, but in Carrara, it gives me black holes in the models depending on the position of the camera
It really drives me crazy because I just can't use a displacement map in Carrara

Files:
https://www.dropbox.com/s/192860wpwbve6 ... ap-Bug.car
https://www.dropbox.com/s/bhhj3jis5jys3 ... ap-Bug.jpg

Best wishes,
Thomas

I get the same problem when I export the scene to the Standalone. I will try and get one of the Octane developers to take a look.

tschwenke wrote:Hi,
As already pointed out some time ago, there is a bug with displacement maps. In OR Standalone, it seems to work fine, but in Carrara, it gives me black holes in the models depending on the position of the camera
It really drives me crazy because I just can't use a displacement map in Carrara

Files:
https://www.dropbox.com/s/192860wpwbve6 ... ap-Bug.car
https://www.dropbox.com/s/bhhj3jis5jys3 ... ap-Bug.jpg

Best wishes,
Thomas

I think it's numerical problems here. To fix it, bump up the ray epsilon to 0.001 and increase the resolution of the displacement map to 2048x2048 or 4096x4096.

Hmm, looks like a bug in the Carrara plugin is preventing setting the Displacement LOD greater than 1024x1024. This will be fixed in the next release.

Hi,

Yes, ray epsilon does the trick or scaling up the model. Thank you

Best wishes,
Thomas

Hi Simon,
I would like to know how to control the projected height of displacement.
In experimenting with the RedSequineKnit, I have displacement, but no real control.
What would enable shorter red columns? The only option currently seems to be no displacement at all?

Separately, is anything happening with the Alpha Image channel?

Thanks for your help,
Rick

Hi,

As far as I know, just click the Displacement layer and adjust the height.

Best wishes,
Thomas

Hi Thomas,
One would think that would be the case, but nothing happens. You know of a displacement material that responds correctly? I can download it from the DB and see if I have better luck.
Thank you,
Rick

Hi,

No, works well here. See images. What version are u using?

Feel free to send a CAR file for testing.

Best wishes,
Thomas

Thanks, Thomas. Nice of you to take a look.

Here is the file.
My Carrara is 8.5pro.
My Octane is 3.03.04.23.
Maybe it us just the Red Sequence Material?

What is the name of the Material that you are showing?

Best,
Rick